package com.yu.interceptor;

import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

//@Component
public class LoginCheckInterceptor implements HandlerInterceptor {

//  TODO:目标资源方法执行前执行，返回true，放行，返回false，不放行
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("LoginCheckInterceptor.preHandle");
        return true;
    }

//    TODO:目标资源方法执行后执行
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("LoginCheckInterceptor.postHandle");
    }

//    TODO:视图渲染完毕后执行，最后执行
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        System.out.println("LoginCheckInterceptor.afterCompletion");
    }
}
